Distributing-tank.



'Patented Jan; 7, |902.

ATTORNEYS.

lK. G. BAHKHAUSEN. msmurma TANK. (Application med :nm` e, i900.)

TN: mwa Hiring cc. wo'rzxuma, wnsnmsmn. h. n

UNITED STATES PATENT OFFICE.

KARL GEORG BARKHAUSEN, OF HANOVER, GERMANY.

. DlSTRlBUTlNG-TANK.

SPECIFICATION forming part 0f Letters Patent No. 690,390, dated January 7, 1902.

Application led January 6, 1900l Serial No. 584. (No model.)

To a/ZZ whom it may concern:

Be it known that I, KARL .GEORG BARI;- HAUSEN, professor, a subject of the German Emperor, residing at Hanover, Germany,have invented a certain new and useful Improvement in Distributing-Tanks, (Case No. 1,) of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawing, forminga part of this specification. y

The forms hitherto selected for distributing containers or tanks, more particularly for the tanks .of water-towers, always show places Where the tank-skin suddenly alters its contour or direction. At such places forces arise which do not coincide with the direction of the tank-skin itself, and therefore at such places special strengthening or stilfenin g rings must always be employed which are designed to absorb orcounteract these forces. The construction of such strengthening or stiffening rings'in the forms of such vessels hitherto selected requires without exception bars of cross-sectional forms, the making of which is always very difficult and the bending of which in a circle necessitates a disproportionately costly operation. The meeting or abutting of a large number of parts at such an edge, moreover, from the first gives cause for leakages or untight-ness, because such places are only with difliculty riveted tight and made water-tight, and, further, the repairs which become necessary when leakages once occur are made more diflicult. Finally, the mounting or support of such tanks requires either an annular support-surface or when separate points of support distributed in a circle are only provided necessitates the employment of annular girders, which have to be made specially strong, because the free supporting parts of the same are not merely subjected to strains which act in a plane carried vertically through the points of support. These' drawbacks are avoided by the form of tank hereinafter described, which forms the object of the present invention.

My invention consists in giving the section of the tank such a shape that all stresses caused by the weight of the liquid, the weight of the structure, dto., coincide with the skin of the tank itself and that Said Skin forms its own support.

In the accompanying drawing a vertical section of a tank constructed according to the present invention is shown.

The tank consists of the conical portion a a b b, to which is attached a bottom b c b, which in the example shown has the shape of a spherical shell, the upper edge of which tangentially coincides with the lower edge of the aforesaid conical portion. The ltank is supported bya series of straight suppor'tsee, which are riveted to the skin itself and form rectilinear prolongations of the conical part of every vertical section carried through a pair of these supports. The supports eerest on an annular base constructed of masonry. The peculiar properties of this construction will be clearly understood if I point out that by giving the skin a shape the vertical section of which contains no corners all stresses the direction of which coincides with radial Vertical planes will also coincide with the skin itself, Vandwill therefore be taken up by said skin without the help of special strengthening structures, such as strengthening-rings and the like. Moreover, the rectilinear or conical part of the structure will itself act as a ring-shaped girder, thus permitting the employment of a series of single supports instead of a ring-shaped continuous support. Lastly, by giving this rectilinear part of the section a certain amount of taper the diameter of the supporting substructure is diminished, thus effecting a considerable savingin masonry.

I would have it understood that I do not consider it essential that the bottom of the tank should be `of a purely spherical shape. It should only be designed in such a manner that in itself its vertical section formsa continuous curve without any breaks or corners, thus avoiding the construction of edges in the tank, and that the tangential prolongation of its upper edge shall coincide with the conical or rectilinear portion, thus avoiding the construction of an edge at the point of attachment between the conical and the curved portions.

Having now particularly described and ascertained the nature of my said invention and IOO in what manner the same is to be performed, I declare that ywhat I claim isl. The combination of a stationary tank for the storage of liquids, comprising an upper conical portion and a curved bottom having its upper edges tangentially coinciding with the lower edges of the conical portion, rectilinear standards arranged along the sid es of the conical portion and extendingr below the lower edge of the same, and a base to which the lower ends of the rectilinear standards are secured, substantially as described.

2. The combination of a stationary tank for the storage of liquids, comprising an upper conical portion and a spherical bottom having its upper edges tangentially coinciding with the lower edges of the Yconical portion, rectilinear standards arranged along the sides of the conical portion and extending below the lower edge of the same, and abase to which the lower ends of the vrectilinear standards are secured, substantially as described.

In witness whereof l'. have hereuntoo subscribed my name this 1st day of December, A. D. 1899.

KARL GEORG BARKHAUSEN.

Witnesses:

LEoNoRE KAsoH, KIRKE LATHROP. 

